= POSTAL SERVICE--U.S.--RATES. Leavitt, Joshua, 1794-1873.
XG The finance of cheap postage. By Joshua -P831 Leavitt, secretary of the Boston Cheap Postage -ALOA
Association. From Hunt's Merchants' magazine, no.5 for Obtober C!], 1849..
New York: Printed by George W.Wood,No.15 Spruce Street. 1849.
Tp. 23.5cem.
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